[PATCH v3 net-next 10/14] net: dsa: Pass VLAN MSTI migration notifications to driver

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Add the usual trampoline functionality from the generic DSA layer down
to the drivers for VLAN MSTI migrations.

Signed-off-by: Tobias Waldekranz <tobias@xxxxxxxxxxxxxx>
---
 include/net/dsa.h  |  3 +++
 net/dsa/dsa_priv.h |  2 ++
 net/dsa/port.c     | 14 +++++++++++++-
 net/dsa/slave.c    |  6 ++++++
 4 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 9d16505fc0e2..1ddaa2cc5842 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -964,6 +964,9 @@ struct dsa_switch_ops {
 				 struct netlink_ext_ack *extack);
 	int	(*port_vlan_del)(struct dsa_switch *ds, int port,
 				 const struct switchdev_obj_port_vlan *vlan);
+	int	(*vlan_msti_set)(struct dsa_switch *ds, struct dsa_bridge bridge,
+				 const struct switchdev_vlan_msti *msti);
+
 	/*
 	 * Forwarding database
 	 */
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 2aba420696ef..d90b4cf0c9d2 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -236,6 +236,8 @@ bool dsa_port_skip_vlan_configuration(struct dsa_port *dp);
 int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock);
 int dsa_port_mst_enable(struct dsa_port *dp, bool on,
 			struct netlink_ext_ack *extack);
+int dsa_port_vlan_msti(struct dsa_port *dp,
+		       const struct switchdev_vlan_msti *msti);
 int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
 			bool targeted_match);
 int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
diff --git a/net/dsa/port.c b/net/dsa/port.c
index 1a17a0efa2fa..f6a822d854cc 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -747,7 +747,8 @@ int dsa_port_mst_enable(struct dsa_port *dp, bool on,
 	if (!on)
 		return 0;
 
-	if (!dsa_port_can_configure_learning(dp)) {
+	if (!(ds->ops->vlan_msti_set &&
+	      dsa_port_can_configure_learning(dp))) {
 		NL_SET_ERR_MSG_MOD(extack, "Hardware does not support MST");
 		return -EINVAL;
 	}
@@ -798,6 +799,17 @@ int dsa_port_bridge_flags(struct dsa_port *dp,
 	return 0;
 }
 
+int dsa_port_vlan_msti(struct dsa_port *dp,
+		       const struct switchdev_vlan_msti *msti)
+{
+	struct dsa_switch *ds = dp->ds;
+
+	if (!ds->ops->vlan_msti_set)
+		return -EOPNOTSUPP;
+
+	return ds->ops->vlan_msti_set(ds, *dp->bridge, msti);
+}
+
 int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu,
 			bool targeted_match)
 {
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 333f5702ea4f..cd2c57de9592 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -482,6 +482,12 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx,
 
 		ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, extack);
 		break;
+	case SWITCHDEV_ATTR_ID_VLAN_MSTI:
+		if (!dsa_port_offloads_bridge_dev(dp, attr->orig_dev))
+			return -EOPNOTSUPP;
+
+		ret = dsa_port_vlan_msti(dp, &attr->u.vlan_msti);
+		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;
-- 
2.25.1




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